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Product Detailed Parameters
- Description：DIODE ZENER ARRAY 51V SOT-23-3
- Series：AZ23
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Configuration：1 Pair Common Anode
- Voltage - Zener (Nom) (Vz)：51 V
- Tolerance：±5%
- Power - Max：300 mW
- Impedance (Max) (Zzt)：100 Ohms
- Current - Reverse Leakage @ Vr：100 nA @ 38 V
- Operating Temperature：-55°C ~ 150°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- pa_package-case：
- Supplier Device Package：SOT-23-3
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Overview
The AZ23C51-E3-08 is a silicon planar Zener diode array from the Vishay AZ23 series, housed in an SOT-23 package. It features a common anode configuration with two independent diodes sharing a single terminal. The nominal Zener voltage is 51 V with a tolerance of ±5%. Electrical characteristics include a maximum reverse leakage current of 50 µA at 38 V and a dynamic resistance of 100 Ω at a test current of 2 mA. The device supports a maximum power dissipation of 300 mW on an FR-4 board and operates within a temperature range of -55 °C to +150 °C.
Feature Summary
- Dual-channel architecture providing two independent Zener diodes in a single common anode package for space-constrained designs.
- Silicon planar construction ensures robust performance and high ESD protection capability exceeding 8 kV via human body model.
- RoHS-compliant commercial grade manufacturing without automotive qualification requirements.
Applications
- Voltage reference circuits requiring dual supply rails or split power architectures.
- Overvoltage protection stages for sensitive input lines in consumer electronics.
- Clamping applications in signal conditioning paths where common ground references are utilized.
Procurement Notes
Verify that the specific ordering suffix matches the required tape and reel specifications. The '-08' designation indicates units per reel and minimum order quantity constraints distinct from other packaging variants. Confirm RoHS compliance status aligns with project environmental standards before finalizing procurement orders.
Selection Notes
Select this component when a dual-diode solution is necessary to save board space compared to discrete single packages. Ensure the circuit design accommodates the common anode topology, as both diodes share a single electrical connection point. Validate thermal management strategies against the specified junction-to-lead thermal resistance values under expected operating loads.
Part Context
This part belongs to the broader AZ23 series of small signal Zener diodes manufactured by Vishay General Semiconductor. The series offers a wide range of standardized Zener voltages from 2.2 V to 75 V. Variations exist for different tolerances and automotive qualifications, but this specific code represents the standard commercial grade variant.
Replacement Considerations
AZ23C51-E3-18
FAQ
What is the dynamic resistance value for the AZ23C51-E3-08?
The dynamic resistance (ZZ) is specified as a maximum of 100 Ω when tested at a current of 2 mA.
Does this component meet AEC-Q101 automotive standards?
No, the base P/N-E3 designation indicates a commercial grade product. Automotive qualification requires the HE3_A suffix.
How is the internal structure configured?
The device contains one pair of Zener diodes arranged in a common anode configuration within a single SOT-23 package.
